MOBATIME Network Master Clock – CISA

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1. EXECUTIVE SUMMARY

• CVSS v4 9.3
• ATTENTION: Exploitable remotely/Low attack complexity
• Vendor: MOBATIME
• Equipment: Network Master Clock – DTS 4801
• Vulnerability: Use of Default Credentials

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to take control of the operating system for this product.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of Network Master Clock – DTS 4801, a primary clock used to synchronize with secondary clocks, are affected:

• Network Master Clock – DTS 4801: FW Version 00020419.01.02020154

3.2 VULNERABILITY OVERVIEW

3.2.1 Use of Default Credentials CWE-1392

MOBATIME Network Master Clock – DTS 4801 allows attackers to use SSH to gain initial access using default credentials.

CVE-2024-12286 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2024-12286. A base score of 9.3 has been calculated; the CVSS vector string is (CVSS4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health, Transportation Systems
• COUNTRIES/AREAS DEPLOYED: Worldwide
• COMPANY HEADQUARTERS LOCATION: Switzerland

3.4 RESEARCHER

Mate Csorba and Zoltan Kato from DNV reported this vulnerability to CISA.

4. MITIGATIONS

MOBATIME recommends users update to the latest firmware version from their homepage.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

• Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
• Locate control system networks and remote devices behind firewalls and isolating them from business networks.
• When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

• December 10, 2024: Initial Publication

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